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An AC source is connected to the given circuit. The value of \(\phi\) will be:
1. \(60^\circ\) 2. \(90^\circ\)
3. \(30^\circ\) 4. \(45^\circ\)

Subtopic:  Different Types of AC Circuits |
 68%
Level 2: 60%+
NEET - 2023
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If \(Z_1\) and \(Z_2\) are the impedances of the given circuits \(\mathrm{(a)}\) and \(\mathrm{(b)}\) as shown in the figures, then choose the correct option:

1. \(Z_1<Z_2\)
2. \(Z_1+Z_2=20~\Omega\)
3. \(Z_1=Z_2\)
4. \(Z_1>Z_2\)
Subtopic:  Different Types of AC Circuits |
 66%
Level 2: 60%+
NEET - 2023
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The maximum power is dissipated for an AC in a/an:
1. resistive circuit 2. \({LC}\) circuit
3. inductive circuit 4. capacitive circuit
Subtopic:  Power factor |
 75%
Level 2: 60%+
NEET - 2023
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The net impedance of the circuit (as shown in the figure) will be:
1. \(25~\Omega\) 2. \(10\sqrt{2}~\Omega\)
3. \(15~\Omega\) 4. \(5\sqrt{5}~\Omega\)
Subtopic:  Different Types of AC Circuits |
 66%
Level 2: 60%+
NEET - 2023
Hints
In a series \({LCR}\) circuit, the inductance \({L}\) is \(10~\text{mH}\), capacitance \({C}\) is \(1~\mu\text{F}\) and resistance \({R}\) is \(100~\Omega\). The frequency at which resonance occurs is:
1. \(1.59~\text{kHz}\) 2. \(15.9~\text{rad/s}\)
3. \(15.9~\text{kHz}\) 4. \(1.59~\text{rad/s}\)
Subtopic:  Different Types of AC Circuits |
 67%
Level 2: 60%+
NEET - 2023
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A \(12~\text{V},60~\text{W}\) lamp is connected to the secondary of a step-down transformer, whose primary is connected to AC mains of \(220~\text{V}\). Assuming the transformer to be ideal, what is the current in the primary winding?
1. \(0.37~\text{A}\)
2. \(0.27~\text{A}\)
3. \(2.7~\text{A}\)
4. \(3.7~\text{A}\)
Subtopic:  Transformer |
 74%
Level 2: 60%+
NEET - 2023
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A non-ideal coil, a capacitor, and an AC-source of RMS voltage \(24~\text V\) are connected in series. By varying the frequency of the source, a maximum RMS current of \(6~\text A\) is observed. If the coil is connected to a DC-battery of EMF \(12~\text V\) and internal resistance \(2~\Omega,\) the current in it in steady-state will be:
1. \(1~\text A\)
2. \(1.5~\text{A}\)
3. \(2~\text A\)
4. \(2.4~\text A\)
Subtopic:  AC vs DC |
 70%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
A standard filament lamp consumes \(100~\text W\) when connected to \(200~\text V\) AC mains supply. The peak current through the bulb will be:
1. \(0.707~\text A\) 
2. \(1~\text A\) 
3. \(1.414~\text A\) 
4. \(2~\text A\) 
Subtopic:  RMS & Average Values |
 74%
Level 2: 60%+
NEET - 2022
Hints
An inductor of inductance \(2~\text{mH}\) is connected to a \(220~\text{V}\), \(50~\text{Hz}\) ac source. Let the inductive reactance in the circuit is \(X_1\). If a \(220~\text{V}\) DC source replaces the AC source in the circuit, then the inductive reactance in the circuit is \(X_2\). \(X_1\) and \(X_2\), respectively, are:
1. \(6.28~\Omega\), zero
2. \(6.28~\Omega\), infinity
3. \(0.628~\Omega\), zero
4. \(0.628~\Omega\), infinity
Subtopic:  Different Types of AC Circuits |
 72%
Level 2: 60%+
NEET - 2022
Hints
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Given below are two statements:
Statement I: In an AC circuit, the current through a capacitor leads the voltage across it.
Statement II: In AC circuits containing pure capacitance only, the phase difference between the current and the voltage is \(\pi.\)
 
1. Both Statement I and Statement II are correct.
2. Both Statement I and Statement II are incorrect.
3. Statement I is correct but Statement II is incorrect.
4. Statement I is incorrect but Statement II is correct.
Subtopic:  Different Types of AC Circuits |
 72%
Level 2: 60%+
NEET - 2022
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